|
The 18th century Swiss mathematician Leonhard Euler developed the concept of Latin Squares where numbers in a grid appear only once, across and up and down.
Two hundred years after Euler, in 1979, retired American architect Howard Garns contributed
puzzles titled Number Place for publication by Connecticut-based crossword giant Dell Magazines.
In the mid 80s, a Japan company, Nikoli Inc., introduced a version of the puzzle that became a huge hit.
"Su" means number in Japanese, and "Doku" refers to the single place.
|
There are 6,670,903,752,021,072,936,960 possible combinations for completing a 9-by-9 sudoku
but it requires no SAT scores and has nothing to do with mathematics but challanges children and adults all over the world.
It is a universal game, using plain rules of logic and deduction.
In Sudoku Vario you may choose not only numbers but letters, symbols, and images to play with.
Completing the puzzle requires attention, patience and logical ability.
Read Wikipedia about Sudoku
Math behind Sudoku